From 35350ffdc752ced1fe3e3dfc3938d32e6ff76406 Mon Sep 17 00:00:00 2001
From: Prathamesh Musale <prathamesh.musale0@gmail.com>
Date: Tue, 19 Mar 2024 17:28:09 +0530
Subject: [PATCH] Catch no matching event errors while parsing logs

---
 src/indexer.ts | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/indexer.ts b/src/indexer.ts
index 2077a4f..d6acb75 100644
--- a/src/indexer.ts
+++ b/src/indexer.ts
@@ -513,20 +513,34 @@ export class Indexer implements IndexerInterface {
     console.timeEnd('time:indexer#processBlockAfterEvents-dump_subgraph_state');
   }
 
-  parseEventNameAndArgs (kind: string, logObj: any): any {
+  parseEventNameAndArgs (kind: string, logObj: any): { eventParsed: boolean, eventDetails: any } {
     const { topics, data } = logObj;
 
     const contract = this._contractMap.get(kind);
     assert(contract);
 
-    const logDescription = contract.parseLog({ data, topics });
+    let logDescription: ethers.utils.LogDescription;
+    try {
+      logDescription = contract.parseLog({ data, topics });
+    } catch (err) {
+      // Return if no matching event found
+      if ((err as Error).message.includes('no matching event')) {
+        log(`WARNING: Skipping event for contract ${kind} as no matching event found in the ABI`);
+        return { eventParsed: false, eventDetails: {} };
+      }
+
+      throw err;
+    }
 
     const { eventName, eventInfo, eventSignature } = this._baseIndexer.parseEvent(logDescription);
 
     return {
-      eventName,
-      eventInfo,
-      eventSignature
+      eventParsed: true,
+      eventDetails: {
+        eventName,
+        eventInfo,
+        eventSignature
+      }
     };
   }